Kata bahasa Indonesia
English word
CIDE DICTIONARY
Tetrahedrite, n. [So called because the crystals of the species are commonly tetrahedrons.].
A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore , fahlore , and panabase . [1913 Webster]